Steel heating boilers are central heating boilers designed for heating private houses, apartment buildings, offices, production facilities, warehouses and shops. Steel boilers can use any solid fuel as fuel – firewood, sawdust briquettes, coal.
Steel heating boilers have a high efficiency coefficient (70 – 90%) and lower fuel consumption compared to cast iron boilers. This is achieved thanks to the long flue gas path (heat from the combustion process is transferred more to the heating system). The burning time of steel boilers ranges from 4 to 6 hours, but for certain models, when burning firewood, it can reach up to 18 hours. With proper installation and maintenance of the heating boiler, its service life can extend up to 15 years.
When choosing a steel heating boiler, it is necessary to line the flue with a stainless steel pipe or use a ceramic chimney. Steel boilers have a high efficiency coefficient, and therefore the outgoing flue gas temperature is low. In the chimney it drops below the dew point (58°C) and condensate forms, which damages the chimney.
The installation cost of a steel boiler will be higher compared to a cast iron heating boiler, as more control fittings are required – two circulation pumps, a four-way valve, chimney lining, etc. The heating boiler is easy to clean of combustion by-products thanks to its smooth boiler walls. As with a cast iron solid fuel boiler, it is also advisable to install a steel boiler together with a buffer tank, in order to maintain an even temperature in the rooms, as well as to achieve more complete combustion of the fuel and a higher efficiency coefficient for the boiler.